alison yang

China, Beijing

A Global Positioning System (GPS) is a satellite-based navigation system originally developed for military use and now commonly used by civilians to keep from getting lost. Concerned parents and suspicious spouses have also begun to use GPS devices a new way--for vehicle tracking. According to Leif Kehrein, co-owner in the online company Spyville.com, you can choose between two types of GPS devices for tracking: a logger, which will record every place a vehicle has been for a set period of time, or a live GPS tracker, which will tell you where a vehicle has been in the last minute or so. Either version can be secretly attached to a vehicle by following a few steps.now GPS device has developed into different styles ,such as OBD II ,mobile DVR,vehicle terminal and GPS Telematics

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